In their paper, they state: "Many of the proposed models to explain FRBs use a single high energy event involving compact objects (such as neutron star mergers) and therefore cannot easily explain a two-component FRB.

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"Models that are based on extreme versions of flaring, pulsing or orbital events however could produce multiple component profiles."

While it is easy to get excited about the idea of aliens trying to contact us, in the past, these signals have been known to have a completely boring source.

In May, scientists had to dial down their excitement over similar signals detected by the Parkes radio telescope, when they found out that a microwave oven in the kitchen was responsible for the bursts. Fail.